Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 116
Filter
1.
J Pediatr Psychol ; 2024 Jun 14.
Article in English | MEDLINE | ID: mdl-38872285

ABSTRACT

OBJECTIVE: Culture and diversity-related training is critical to the development of competent pediatric psychologists. Evaluation of training efforts have been conducted at the program level, yet evaluation of trainee experiences in culture and diversity-related training remains unassessed. This trainee-led study was the first formal assessment of pediatric psychology trainee experiences of culture and diversity-related training and the impact of training on their own cultural humility. METHODS: Study overview and a survey link was distributed across 2 listservs associated with the American Psychological Association (Division 53, Division 54) and sent directly to directors of graduate, internship, and fellowship training programs with a request to share with trainees. Surveys assessing integration of cultural training and trainee cultural humility were completed. Trainees also provided qualitative feedback regarding their multicultural training and development. RESULTS: Pediatric psychology trainees (N = 90) reported inconsistent integration of culture and diversity topics into their training. Of the 34 training areas assessed, 10 were perceived as thoroughly integrated into formal training by at least half of the respondents. Trainees often sought independent cultural training outside of their programs, and no relationship was detected between perceived integration of cultural training and trainee cultural competence. DISCUSSION: Results indicate room for improvement regarding integration of cultural training and a need to better understand driving forces behind trainees independently seeking training outside of their formal training programs. Moreover, understanding the aspects of training that are most contributory to trainee development is needed given that no relationship between training and development emerged in the current study.

2.
J Pediatr Psychol ; 2024 Apr 05.
Article in English | MEDLINE | ID: mdl-38578612

ABSTRACT

OBJECTIVE: Illness intrusiveness refers to the subjective cognitive appraisal of a chronic health condition interfering in daily, valued activities and may be highly relevant for parents of children with atypical genital appearance due to differences of sex development (DSD). However, a measure of illness intrusiveness has not been validated for this population. The current study aimed to evaluate the factor structure of the Illness Intrusiveness Scale for Parents (IIS-P) and examine convergent validity. METHODS: Participants included 102 parents (Mage = 33.39 years, SD = 6.48; 58% mothers) of 65 children (<2 years old) diagnosed with DSD participating in a larger, longitudinal study. Parents completed the IIS-P as well as self-report measures of stigma, and anxious and depressive symptoms. An exploratory factor analysis (EFA) was conducted. RESULTS: EFA results supported a 1-factor intrusiveness solution (α = .93), as well as a 2-factor solution measuring intrusiveness on daily living (α = .92) and community connectedness (α = .85). The 1-factor solution and both factors of the 2-factor solution demonstrated significant convergent validity with stigma as well as anxious and depressive symptoms. CONCLUSIONS: Support emerged for both 1- and 2-factor solutions of the IIS-P in parents of children with DSD. The decision to evaluate illness intrusiveness as a total score or to examine the subscales of daily living and community connectedness should be tailored to the unique aims of researchers and clinicians. Future research should conduct a confirmatory factor analysis with both 1- and 2-factor models with larger, more diverse samples of caregivers.

4.
J Pediatr Psychol ; 49(3): 207-223, 2024 Mar 20.
Article in English | MEDLINE | ID: mdl-38423530

ABSTRACT

OBJECTIVE: Parents of children who died of a medical condition experience a range of psychosocial outcomes. The current scoping review aims to summarize the outcomes assessed, methodology, and sample characteristics of recent psychosocial research conducted with this population. METHODS: Included studies were limited to peer-reviewed, psychosocial outcomes research published between August 2011 and August 2022, written in English, and including caregiver study participants of children who died of a medical condition. Data sources were scholarly journal articles from 9 electronic databases, including Scopus, Web of Science, Academic Search Primer, ProQuest Research Library, PubMed, Embase, PsycINFO, Psychology & Behavioral Sciences Collection, and Health Source: Nursing/Academic Edition. The Mixed Methods Appraisal Tool-2018 evaluated methodological quality. RESULTS: The study sample included 106 studies, most of which were either qualitative (60%) or quantitative (29%). Mixed-methods studies (8%) and randomized clinical trials (2%) were also identified. Study quality was variable, but most studies met all quality criteria (73%). Studies primarily represented cancer populations (58%), White participants (71%), and mothers (66%). Risk-based psychosocial outcomes (e.g., grief) were more commonly assessed than resilience-based outcomes. CONCLUSIONS: The current scoping review revealed that recent research assessing the psychosocial outcomes of bereaved parents is limited in the representation of diverse populations, primarily qualitative, of broadly strong methodological quality, and oriented to psychosocial risk. To enhance the state of the science and inform evidence-based psychosocial services, future research should consider varied methodologies to comprehensively assess processes of risk and resilience with demographically and medically diverse populations.


Subject(s)
Neoplasms , Resilience, Psychological , Female , Humans , Child , Parents/psychology , Neoplasms/psychology , Caregivers/psychology , Mothers
5.
Horm Res Paediatr ; 97(2): 99-105, 2024.
Article in English | MEDLINE | ID: mdl-37552959

ABSTRACT

INTRODUCTION: There are increased calls to address psychosocial needs among individuals with classical congenital adrenal hyperplasia (CAH). However, cross-cultural disparities exist in treatment practices and psychosocial outcomes that impact the generalizability of evidence-based recommendations. To date, this disparity has not been quantified. The present scoping review uses a dual approach to contrast rates of CAH diagnosis with CAH psychosocial research rates across countries. METHODS: Six electronic database searches were conducted for: (1) CAH incidence/birth/prevalence rates; and (2) psychosocial research with affected individuals and their families. Two authors reviewed each abstract for inclusion criteria. RESULTS: Sixty-eight and 93 full-text articles, respectively, were evaluated for incidence and country. The countries/regions with the highest reported CAH rates are Thailand, Ghana, and India. Those with the greatest portion of psychosocial publications are the USA, Germany, and the UK. CONCLUSION: A discrepancy exists between those countries with the highest CAH rates and those publishing psychosocial research. Specifically, increased rates of CAH are seen in non-Western countries/regions, whereas most psychosocial research arises out of Western Europe and the USA. Due to cultural differences between these regions, increased global collaboration is needed to both inform psychosocial research and translate findings in ways that are representative worldwide.


Subject(s)
Adrenal Hyperplasia, Congenital , Humans , Adrenal Hyperplasia, Congenital/epidemiology , Adrenal Hyperplasia, Congenital/diagnosis , Cross-Cultural Comparison , Germany , Incidence , Europe
6.
Psychooncology ; 33(1): e6253, 2024 Jan.
Article in English | MEDLINE | ID: mdl-38009605

ABSTRACT

OBJECTIVE: Limited research has characterized cancer-related stress (CRS) among families of childhood cancer survivors. We examined the prevalence of CRS among survivors and caregivers, as well as its association with health risk perceptions (i.e., prognosis, risk for diminished quality of life) and views of survivor quality of life (QoL). METHODS: At five years post-diagnosis or relapse, survivors (n = 100; Mage  = 15.84 years; 89% White), mothers (n = 127), and fathers (n = 59) reported their CRS. Perceived prognosis and risk for diminished QoL were rated on a 0%-100% visual analogue scale, while the PedsQL assessed QoL. RESULTS: CRS was low (M = 1.6-1.8, scale: 1-4); mothers reported greater stress than survivors, p = 0.038, d = 0.25. There was an indirect effect of survivors' perceived prognosis on their QoL through CRS, CI = 0.04 to 0.25, R2  = 0.32. Among mothers, there was an indirect effect of perceived prognosis/risk for diminished QoL on their reports of survivor QoL through CRS, CI = 0.03 to 0.23 and -0.15 to -0.03, R2  = 0.28 and 0.32, respectively. There were no indirect effects among fathers. CONCLUSIONS: CRS may be an important, modifiable factor that could improve survivors' QoL. Research is needed to examine how CRS changes over time to assess the utility of interventions among female survivors, mothers, and those with lower prognosis estimates.


Subject(s)
Cancer Survivors , Neoplasms , Humans , Female , Child , Adolescent , Quality of Life , Neoplasms/epidemiology , Prevalence , Survivors
7.
Angew Chem Int Ed Engl ; 62(50): e202311479, 2023 12 11.
Article in English | MEDLINE | ID: mdl-37934145

ABSTRACT

A conceptual framework towards understanding biological condensed phases is emerging, derived from biological, biomimetic, and synthetic sequences. However, de novo peptide condensate design remains a challenge due to an incomplete understanding of the structural and interactive complexity. We designed peptide modules based on a simple repeat motif composed of tripeptide spacers (GSG, SGS, GLG) interspersed with adhesive amino acids (R/H and Y). We show, using sequence editing and a combination of computation and experiment, that n→π* interactions in GLG backbones are a dominant factor in providing sufficient backbone structure, which in turn regulates the water interface, collectively promoting liquid droplet formation. Moreover, these R(GLG)Y and H(GLG)Y condensates unexpectedly display sequence-dependent emission that is a consequence of their non-covalent network interactions, and readily observable by confocal microscopy.


Subject(s)
Amino Acids , Peptides , Fluorescence , Peptides/chemistry , Amino Acids/chemistry
8.
Cancers (Basel) ; 15(17)2023 Aug 31.
Article in English | MEDLINE | ID: mdl-37686630

ABSTRACT

Chronic myeloid leukemia (CML) is treated with tyrosine kinase inhibitors (TKI) that target the pathological BCR-ABL1 fusion oncogene. The objective of this statistical meta-analysis was to assess the prevalence of other hematological adverse events (AEs) that occur during or after predominantly first-line treatment with TKIs. Data from seventy peer-reviewed, published studies were included in the analysis. Hematological AEs were assessed as a function of TKI drug type (dasatinib, imatinib, bosutinib, nilotinib) and CML phase (chronic, accelerated, blast). AE prevalence aggregated across all severities and phases was significantly different between each TKI (p < 0.05) for anemia-dasatinib (54.5%), bosutinib (44.0%), imatinib (32.8%), nilotinib (11.2%); neutropenia-dasatinib (51.2%), imatinib (29.8%), bosutinib (14.1%), nilotinib (14.1%); thrombocytopenia-dasatinib (62.2%), imatinib (30.4%), bosutinib (35.3%), nilotinib (22.3%). AE prevalence aggregated across all severities and TKIs was significantly (p < 0.05) different between CML phases for anemia-chronic (28.4%), accelerated (66.9%), blast (55.8%); neutropenia-chronic (26.7%), accelerated (63.8%), blast (36.4%); thrombocytopenia-chronic (33.3%), accelerated (65.6%), blast (37.9%). An odds ratio (OR) with 95% confidence interval was used to compare hematological AE prevalence of each TKI compared to the most common first-line TKI therapy, imatinib. For anemia, dasatinib OR = 1.65, [1.51, 1.83]; bosutinib OR = 1.34, [1.16, 1.54]; nilotinib OR = 0.34, [0.30, 0.39]. For neutropenia, dasatinib OR = 1.72, [1.53, 1.92]; bosutinib OR = 0.47, [0.38, 0.58]; nilotinib OR = 0.47, [0.42, 0.54]. For thrombocytopenia, dasatinib OR = 2.04, [1.82, 2.30]; bosutinib OR = 1.16, [0.97, 1.39]; nilotinib OR = 0.73, [0.65, 0.82]. Nilotinib had the greatest fraction of severe (grade 3/4) hematological AEs (30%). In conclusion, the overall prevalence of hematological AEs by TKI type was: dasatinib > bosutinib > imatinib > nilotinib. Study limitations include inability to normalize for dosage and treatment duration.

9.
J Am Coll Health ; : 1-9, 2023 Jul 03.
Article in English | MEDLINE | ID: mdl-37395721

ABSTRACT

Objective: Investigate the sleep hygiene and quality of emerging adults with a CMC compared to healthy peers as well as potential predictors of sleep quality. Participants: College students with and without a CMC (n = 137 per group; aged 18-23 years) at a Midwestern university. Methods: Participants reported on anxious and depressive symptoms, sleep quality, sleep hygiene, and illness uncertainty. Results: College students with a CMC reported poorer sleep quality (Adolescent Sleep Quality Scale-Revised) and hygiene (Adolescent Sleep Hygiene Scale-Revised) than the non-CMC group. The indirect effect of internalizing symptoms on sleep quality via cognitive-emotional arousal was only significant in the CMC. Illness uncertainty demonstrated a significant indirect effect on sleep quality though the consecutive influence of internalizing symptoms and cognitive-emotional arousal. Conclusions: Emerging adults with CMCs may experience poorer sleep outcomes than peers. Illness uncertainty, internalizing symptoms, and cognitive-emotional arousal appear relevant to sleep outcomes, suggesting clinical implications for these constructs.

10.
Am J Dermatopathol ; 45(8): 519-531, 2023 Aug 01.
Article in English | MEDLINE | ID: mdl-37462204

ABSTRACT

ABSTRACT: Immunodeficiency-associated lymphoproliferative disorders (IA-LPDs) constitute a diverse range of conditions including posttransplant lymphoproliferative disorders, other iatrogenic IA-LPDs, and lymphoproliferative disorders associated with an underlying primary immune disorder or HIV infection. IA-LPDs are clinically and pathologically heterogeneous, and there is a lack of standardization of diagnostic terminology. They can represent a potential serious diagnostic pitfall because the histological features of clinically indolent proliferations may mimic those of high-grade lymphoma. However, correct identification of these entities is essential given that complete remission may occur upon reversal of the underlying cause of immunosuppression without the need for systemic therapy. IA-LPDs presenting in the skin are rare but well documented. One form of iatrogenic IA-LPD, methotrexate-associated lymphoproliferative disorder (MTX-LPD), can present with cutaneous nodules, plaques, or ulcers. Predominantly, MTX-LPD develops in the context of long-term treatment of autoimmune conditions, such as rheumatoid arthritis, dermatomyositis, and Sjögren syndrome, and may be associated with underlying Epstein-Barr virus (EBV) infection. We present 4 cases of cutaneous EBV-positive B-cell MTX-LPD and describe their clinical and morphological findings. Comparison of our histological findings to the diagnostic criteria for EBV-positive mucocutaneous ulcer (EBVMCU) revealed significant overlap, highlighting the intersection between MTX-LPD and EBVMCU. Withdrawal of methotrexate resulted in healing of all lesions at a mean time of 2 months. In summary, close clinicopathological correlation is vital to identify MTX-LPD presenting as cutaneous EBVMCU given that the initial treatment strategy is that of withdrawal of methotrexate without the need for immediate systemic therapy.


Subject(s)
Epstein-Barr Virus Infections , HIV Infections , Immunologic Deficiency Syndromes , Lymphoma, B-Cell , Lymphoproliferative Disorders , Precancerous Conditions , Humans , Methotrexate/adverse effects , Epstein-Barr Virus Infections/diagnosis , Epstein-Barr Virus Infections/pathology , Herpesvirus 4, Human , Ulcer/pathology , HIV Infections/complications , Lymphoma, B-Cell/drug therapy , Lymphoproliferative Disorders/chemically induced , Lymphoproliferative Disorders/diagnosis , Precancerous Conditions/drug therapy , Iatrogenic Disease
11.
J Pediatr Psychol ; 48(9): 759-767, 2023 09 20.
Article in English | MEDLINE | ID: mdl-37500595

ABSTRACT

OBJECTIVE: Differences/disorders of sex development (DSDs) are rare, congenital conditions involving discordance between chromosomes, gonads, and phenotypic sex and are often diagnosed in infancy. A key subset of parents of children newly diagnosed with a DSD experience clinically elevated distress. The present study examines the relationship between perinatal factors (i.e., gestational age, delivery method) and trajectories of parental adjustment. METHODS: Parent participants (mothers = 37; fathers = 27) completed measures at baseline, 6- and 12-month follow-up. Multilevel linear regression controlled for clustering of the data at three levels (i.e., time point, parent, and family) and examined the relationship between perinatal factors and trajectories of depressive and anxious symptoms. Two-way interactions between perinatal factors and parent type were evaluated. RESULTS: Overall depressive and anxious symptoms decreased over time. There were significant interactions between gestational age and parent type for depressive and anxious symptoms, with younger gestational age having a stronger negative effect on mothers vs. fathers. There was a significant interaction between time and gestational age for depressive symptoms, with 36 weeks' gestational age demonstrating a higher overall trajectory of depressive symptoms across time compared to 38 and 40 weeks. Findings for the delivery method were not significant. CONCLUSIONS: Findings uniquely demonstrated younger gestational age was associated with increased depressive symptoms, particularly for mothers compared to fathers. Thus, a more premature birth may predispose parents of infants with DSD to distress. Psychosocial providers should contextualize early diagnosis-related discussions within stressful birth experiences when providing support.


Subject(s)
Mothers , Parents , Female , Infant , Child , Pregnancy , Humans , Male , Parents/psychology , Mothers/psychology , Gestational Age , Sexual Development , Genitalia , Fathers/psychology , Depression/psychology
13.
J Dev Behav Pediatr ; 44(3): e225-e230, 2023 04 01.
Article in English | MEDLINE | ID: mdl-36729523

ABSTRACT

OBJECTIVE: Differences of sex development (DSD) are congenital conditions in which individuals are discordant in their chromosomal, phenotypic, and/or gonadal sex. Treatment of DSD can involve surgical intervention to external genitalia to make anatomy seem male-typical (i.e., male genitoplasty). Caregiver-perceived decisional regret regarding young boys with DSD was explored quantitatively and qualitatively. METHOD: Participants (N = 39) were caregivers of infants (N = 23) diagnosed with DSD (mean age = 8.9 months, standard deviation = 5.9 months) reared male participating in a longitudinal investigation of psychosocial outcomes. Qualitative data were collected at 6 to 12 months after baseline enrollment to evaluate caregiver decision-making corresponding to levels of regret concerning their child's treatment. All but one infant received genital surgery before caregiver reporting on their decisional regret. Quantitative exploratory analyses evaluated longitudinal predictors of decisional regret at 6 to 12 months. RESULTS: When completing a write-in item inquiring about decision-making and potential regret, most caregivers (n = 16, 76%) reported that their child's genital surgery was their first medical decision. Two caregivers referenced gender assignment as a decision point. One-third of caregivers reported some level of decisional regret (33%), with 67% reporting no regret. No hypothesized predictors of decisional regret were statistically significant. CONCLUSION: Many caregivers of infants with DSD reared male view genital surgery as a first health care decision. Approximately one-third of caregivers reported some level of decisional regret. Further research is warranted to explore long-term decisional regret; it will be particularly important to investigate the decisional regret of patients with DSD.


Subject(s)
Caregivers , Decision Making , Child , Humans , Male , Infant , Caregivers/psychology , Emotions , Sexual Development
14.
J Am Coll Health ; 71(4): 1167-1174, 2023.
Article in English | MEDLINE | ID: mdl-34242532

ABSTRACT

OBJECTIVE: To examine the relative contribution of transition readiness (i.e., healthcare self-management) to health-related quality of life (HRQoL) among emerging adult (EA) college students without a chronic medical condition (CMC).Participants: College students (n = 2372; Mage = 19.32, SD = 1.26) from a Midwestern university.Methods: Participants completed online measures of demographics, HRQoL, and transition readiness.Results: Hierarchical regression analyses found transition readiness accounted an additional 3-4% of the variability in mental and physical HRQoL (p < .001), beyond demographic factors. 11.3% of EAs reported overall mastery of transition readiness, with navigating health insurance being the weakest area.Conclusions: Findings support the consensus that transition readiness is relevant to HRQoL for all EAs, including those without a CMC. EAs without a CMC demonstrate relatively weak transition readiness skills. Primary and university-based healthcare might consider programs supporting transition readiness and HRQoL among underresourced EAs.


Subject(s)
Quality of Life , Transition to Adult Care , Humans , Adult , Students , Universities , Chronic Disease , Surveys and Questionnaires
15.
J Clin Psychol Med Settings ; 30(1): 143-152, 2023 03.
Article in English | MEDLINE | ID: mdl-35461438

ABSTRACT

Emerging adults with a chronic medical condition (CMC) are at increased risk for developing health anxiety (HA). Adverse childhood experiences (ACEs) have been linked to developing HA. CMCs and ACEs frequently co-occur among emerging adults. However, no known research has examined ACEs and HA within this critical developmental period. Further, increased negative illness appraisals (e.g., uncertainty, intrusivness) may partially explain the relation between ACEs and HA. The present study examined the following mediation model: ACEs → illness appraisals → HA. Emerging adults (N = 121) with a CMC completed self-report measures of demographics, ACEs, illness appraisals, and HA. Regression analyses were conducted to test each illness appraisal as a mediator between ACEs and HA. Results demonstrated significant indirect effects for both illness appraisals. Findings demonstrate greater ACEs may increase negative illness appraisals which heightens overall HA. Thus, these associations support trauma-informed care approaches to support emerging adults.


Subject(s)
Adverse Childhood Experiences , Adult , Humans , Anxiety/epidemiology , Anxiety Disorders , Chronic Disease , Self Report
17.
J Pediatr Health Care ; 37(1): 40-47, 2023.
Article in English | MEDLINE | ID: mdl-36064763

ABSTRACT

INTRODUCTION: Adolescents and young adults (AYA) with a chronic medical condition (CMC) attending college must learn to manage their own healthcare (i.e., transition readiness). Maturity has been linked to positive outcomes in AYAs. Research has established a positive relationship between transition readiness and quality of life. The current study aimed to examine a model of perceived maturityàtransition readinessàmental and physical quality of life. METHOD: AYA (N = 153) with a CMC completed self-report questionnaires. RESULTS: The perceived maturity→transition readiness→mental quality of life indirect path was significant (ab = 1.96, 95% CI = 0.53 to 3.62). The perceived maturity→transition readiness→physical quality of life direct and indirect paths were not significant. DISCUSSION: Results showed that maturity and transition readiness are positively associated. Transition readiness may be one mechanism by which maturity results in enhanced quality of life. PRACTICE IMPLICATIONS: Findings highlight the value of enhancing strengths such as maturity to promote AYA independence/autonomy.


Subject(s)
Quality of Life , Transition to Adult Care , Young Adult , Adolescent , Humans , Surveys and Questionnaires , Chronic Disease
18.
Front Immunol ; 14: 1332943, 2023.
Article in English | MEDLINE | ID: mdl-38268922

ABSTRACT

The decidual immunome is dynamic, dramatically changing its composition across gestation. Early pregnancy is dominated by decidual NK cells, with a shift towards T cells later in pregnancy. However, the degree, timing, and subset-specific nature of leukocyte traffic between the decidua and systemic circulation during gestation remains poorly understood. Herein, we employed intravascular staining in pregnant C57BL/6J mice and cynomolgus macaques (Macaca fascicularis) to examine leukocyte traffic into the decidual basalis during pregnancy. Timed-mated or virgin mice were tail-vein injected with labelled αCD45 antibodies 24 hours and 5 minutes before sacrifice. Pregnant cynomolgus macaques (GD155) were infused with labelled αCD45 at 2 hours or 5 mins before necropsy. Decidual cells were isolated and resulting suspensions analyzed by flow cytometry. We found that the proportion of intravascular (IVAs)-negative leukocytes (cells labeled by the 24h infusion of αCD45 or unlabeled) decreased across murine gestation while recent immigrants (24h label only) increased in mid- to late-gestation. In the cynomolgus model our data confirmed differential labeling of decidual leukocytes by the infused antibody, with the 5 min infused animal having a higher proportion of IVAs+ cells compared to the 2hr infused animal. Decidual tissue sections from both macaques showed the presence of intravascularly labeled cells, either in proximity to blood vessels (5min infused animal) or deeper into decidual stroma (2hr infused animal). These results demonstrate the value of serial intravascular staining as a sensitive tool for defining decidual leukocyte traffic during pregnancy.


Subject(s)
Antibodies , Leukocytes , Female , Animals , Mice , Pregnancy , Mice, Inbred C57BL , Macaca fascicularis , Staining and Labeling
19.
Chem Sci ; 13(48): 14346-14356, 2022 Dec 14.
Article in English | MEDLINE | ID: mdl-36545145

ABSTRACT

Proteins are an important class of biologics, but there are several recurring challenges to address when designing protein-based therapeutics. These challenges include: the propensity of proteins to aggregate during formulation, relatively low loading in traditional hydrophobic delivery vehicles, and inefficient cellular uptake. This last criterion is particularly challenging for anionic proteins as they cannot cross the anionic plasma membrane. Here we investigated the complex coacervation of anionic proteins with a block copolymer of opposite charge to form polyelectrolyte complex (PEC) micelles for use as a protein delivery vehicle. Using genetically modified variants of the model protein green fluorescent protein (GFP), we evaluated the role of protein charge and charge localization in the formation and stability of PEC micelles. A neutral-cationic block copolymer, poly(oligoethylene glycol methacrylate-block-quaternized 4-vinylpyridine), POEGMA79-b-qP4VP175, was prepared via RAFT polymerization for complexation and microphase separation with the panel of engineered anionic GFPs. We found that isotropically supercharged proteins formed micelles at higher ionic strength relative to protein variants with charge localized to a polypeptide tag. We then studied GFP delivery by PEC micelles and found that they effectively delivered the protein cargo to mammalian cells. However, cellular delivery varied as a function of protein charge and charge distribution and we found an inverse relationship between the PEC micelle critical salt concentration and delivery efficiency. This model system has highlighted the potential of polyelectrolyte complexes to deliver anionic proteins intracellularly. Using this model system, we have identified requirements for the formation of PEC micelles that are stable at physiological ionic strength and that smaller protein-polyelectrolyte complexes effectively deliver proteins to Jurkat cells.

20.
Cancers (Basel) ; 14(19)2022 Sep 26.
Article in English | MEDLINE | ID: mdl-36230609

ABSTRACT

Tyrosine kinase inhibitors (TKIs) are prescribed for chronic myeloid leukemia (CML) and some other cancers. The objective was to predict and rank TKI-related adverse events (AEs), including under-reported or preclinical AEs, using novel text mining. First, k-means clustering of 2575 clinical CML TKI abstracts separated TKIs by significant (p < 0.05) AE type: gastrointestinal (bosutinib); edema (imatinib); pulmonary (dasatinib); diabetes (nilotinib); cardiovascular (ponatinib). Next, we propose a novel cross-domain text mining method utilizing a knowledge graph, link prediction, and hub node network analysis to predict new relationships. Cross-domain text mining of 30+ million articles via SemNet predicted and ranked known and novel TKI AEs. Three physiology-based tiers were formed using unsupervised rank aggregation feature importance. Tier 1 ranked in the top 1%: hematology (anemia, neutropenia, thrombocytopenia, hypocellular marrow); glucose (diabetes, insulin resistance, metabolic syndrome); iron (deficiency, overload, metabolism), cardiovascular (hypertension, heart failure, vascular dilation); thyroid (hypothyroidism, hyperthyroidism, parathyroid). Tier 2 ranked in the top 5%: inflammation (chronic inflammatory disorder, autoimmune, periodontitis); kidney (glomerulonephritis, glomerulopathy, toxic nephropathy). Tier 3 ranked in the top 10%: gastrointestinal (bowel regulation, hepatitis, pancreatitis); neuromuscular (autonomia, neuropathy, muscle pain); others (secondary cancers, vitamin deficiency, edema). Results suggest proactive TKI patient AE surveillance levels: regular surveillance for tier 1, infrequent surveillance for tier 2, and symptom-based surveillance for tier 3.

SELECTION OF CITATIONS
SEARCH DETAIL
...